@Licensecart Thank you, Michael.
@naja7host I stated my intentions, not my final decision about how to make sure more Blesta customers can benefit from the plugin. I stated this intention so that anyone who wants to engage in a discussion with me will know this ahead of time, and can provide a quote accordingly. I don't yet know, for certain, what I'm going to do with the plugin once it's ready. Depending on the cost, I may very well decide to simply redistribute it freely, or send it to Blesta and ask them to look it over and consider including it in the core product, or (as mentioned previously) sell it for a nominal fee (probably between $5 and $10).
I hope that clears things up for you. Ultimately, if I did decide to charge for it, it would be worth it for most hosts to move off of MaxMind and over to Sift Science. The 10,000 free transactions per month alone would save many hosts a tonne of money, so $5 would be worth it for the module. Does that make sense? Either way, I have not made a decision about how to go about distributing it to others. I do think it's important to remember that I'm offering to fund the development of this plugin. I don't think it's unreasonable to consider making some of that money back.